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X is directly proportional to y. When x is 4 then y is 10. Find y when x is 15.

User Eddies
by
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1 Answer

1 vote

Explanation:

The term directly proportional means that


x = ky

Where k is the constant of variation

Solving for k,


4 = k(10)


k = 0.4

So


15 = 0.4(y)


(15)/(0.4) = y


y = 37.5

User Capm
by
8.2k points

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